Textile beam

ABSTRACT

A textile beam includes a substantially cylindrical tube having internal threads at the opposite ends thereof. A pair of heads are each provided with hubs having external threads thereon which are threaded within opposite ends of the tube. The threads on the tube and heads include opposite flanks extending at oblique angles to the longitudinal axis of the tube. Abutting surfaces are formed on the ends of the tube and each of the heads. These abutting surfaces are preloaded in an axial direction parallel with the longitudinal axis of the tube and extend parallel with or are an extension of a line from the joint between the abutting surfaces and the center of deflection of the associated head. Each end of the tube is beveled, and the abutting surface formed on each of the heads joins with an annular surface of arcuate cross-sectional configuration.

United States Patent {72] Inventor John B. McMurtrie V 230 Broadway.Milton, Pa. 17847. {21 I Appl. No. 857,730 [22} Filed Sept. 15.1969 [45]Patented Aug. 3, 1971 (54] TEXTILE BEAM 10 Claims, 5 Drawing Figs.

[52] U.S.Cl 242/118.62 [51] lut.Cl B6511 75/14 [50] FleldoISeareh..242/1l8.62,

[56] References Cited UNITED STATES PATENTS 2.683.573 7/1954 Cary242/118 .62 3,099,417 7/1963 Portal:.. 242/1 18.62 3.317.160 5/1967Laird 242/1 18.62

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Primary Examiner-George F. Mautz Attorney-Shoemaker and MattareABSTRACT: A textile beam includes a substantially cylindrical tubehaving internal threads at the opposite ends thereof. A pair of headsare each provided with hubs having external threads thereon which arethreaded within opposite ends of the tube. The threads on the tube andheads include opposite flanks extending at oblique angles to thelongitudinal axis of the tube. Abutting surfaces are formed on the endsof the tube and each of the heads. These abutting surfaces are preloadedin an axial direction parallel with the longitudinal axis of the tubeand extend parallel with or are an extension of a line from the jointbetween the abutting surfaces and the center of deflection of theassociated head. Each end of the tube is beveled, and the abuttingsurface formed on each of the heads joins with an annular surface ofarcuate cross-sectional configuration.

PATENTEDAUB 3mm 3,596,850

sum 1 or 2 IIWBNTOI JOHN B. McMURTRIE BY Qf W ATTORNEYS minnows 31ml3.596.850

SHEEIEDFZ FIG. 4. |2'

60 2o. 14 k r A. 22 I L 50 182". .v 7 I3 uwznmn JOHN B, McMURTRlE BYJZWLM WW ATTORNEYS BEAM 1 V BACKGROUNDOF mamvannon The preaentinventionrelates'toatextile bearn-or so-called warp beamemployedainrtheteatile industry-and upon which yarn is woundfor-subsequenthandlinggandhse in the fabrication ,of a finished article.- I v Textilebeams of'this type employ;apairofheadssecuredtoopposite ends-,of-a tube;Whenztlie yarn is wound on th'e'b'eam';

the load on-the heads increases tosuch" anextend th'at'it tends anassociated tube, various approacheshavebeen employed in the prior art.As shown, 7 for example; .in" US: Patl- No. 2,683,573, theheads arethreaded "'onto the-associated tube; and buttress-typethreads areprovided on the coop eratin'g ela ments so as to resist separation'ofthe-h'eads from the tube:

No. 3,317,160, the .abuttinggsurfaces onztheheadsand the tube areformedsubstantiallyperpendicularto a -liiie exte'ncl ing from the jointdefined-"by the abutting isurfa'ces to' thecenter of deflection ofthe-headJWith such a constructioni any' deflection of the :head withirespect toEthe'aaaociated tube-GO svumAav-ormmvaimon;

In the present invention; azconatruction isemployed wherein it ianotnecessary to utilize buttress-typethreadsLand a conventional Acme-typeth'reatl is,employed in combination with a novel orientation of theabutting surfaceafoi'med on the tube and the associated heads.v

In the present inventioruzto rque is appliedzto the head dur'-'='- in;assembly abutting surfaces. formed on tube and the heads are-preloadedhtan axial direction paralletwith the, longitudinal of the;tube-.:This:preload=inust beaveroperting or separation of: the aht'tttittgsurfaces atthe joints between the tubeand the heads 'c anoccur;

The abutting surfaces formed on thevtube and veach head the presentinvention are paralielawith. 'oraretan extension'of a line extendingfrom the joint between the abutting surfaces t0"-'- 50. the centerofdetlection ofither'asaociatedhead. a

The abutting surface formed a'teach end ofthetuhe' issub stantiallyfi'ustoconical and tapers inwardly from the' ounersur face of the tubetoward theend of tube.- Each ofithe'seabutting surfaces forms anangle'rofi approximately lwith Y 55 respeetto the'yarnretainings'tace'formedonthe: r'atiiaily outwardly extending flange ofthe aasociatedheadwi A surface is formed on. -the'. tube-=adja'centreach-:of the abutting surfaces: thereof; (each 10f theseatfiacentsurfaces- 2 suchtorque'arld lubricationapplied-tothe'eooperatingtlireads on tlietitbe andjthe'head', and theabuttingsurfaces of'the' joint c'an' preloaded" il'r'arl axial directionparallel with the longitudi'rialaxisoftlie tubei:

structuresliownin l lfii lwitli tli'e-p'arts'in adifferent relativeposition vwitlife'spect to one another;

MG. 3 isart'erila'rged'i view" illustrating: the cooperatingthreadsernployed an the tube-arid heaai nh fiemfi;

HG." 4- 'is'a"sectional view of a'modified 'fornt'of'tl'ieinventioman'tiI V v FIG S 'is -a' sectional vieiv smarts FIG. w mhtmuhgam another'fomioft he'invention'i v I DESGRIPTION-OF'THEPREFEKRED EMEODIMENTSReferringnow to the drawings wherein like reference charactersdesignate" corresponding parts" throughout the several views, thetextile bea'rif of the resent invention in- In another arrangementassh'ownyfor exampk, in US; Pat, 7 25 i lolhavmgiapair ofidenfil'hadisllz Secured to opposite endsth'ereof. Tube-11fis"-'substantially cylindrical in configuration andhas -alongitudinalaxisX X; The tube includes aninner surface -l3-and' concentric "outersurface 14,"int'e'rnalthreads icbei gsfd'rmedinthin'rie'r surfacelii' at'opzposite'ertds' brine-whee If 'shotild be uiideis'tood' that-theopposite ends of the tube are ot identiealconfiguration and cooperatein"a"si'm'ilar manner wim 'the md -headsm seeinFIq-meachendof'th'etubeinchide's'anabiittirig surface ze' which'isfsuumnti'aiiy'frustoconieahconfiguratioriandtapers nanny inwardlyfr'orn-thbute'rstkrface ltof'them'be towardtheendof the tube Each endbfith *tu'be "isalsbbrdvided 'with an adjaeeritsurfa'ce'QZ'whichis'frustoconicaliri ednfigarauari alternates outw'ardly' frb'mthesurface '13 f-tfietube'tdward the end of th'etubeandintersectsabnttiirgsurface 20.

Each -headincl'u'des a hub pdrtion 'lifihaving a many butextehdil'tfiflange '32 extending therefrom; thisflange come y the fame of theyam[wound (mime. befomanypts de'finmga yarn retaining face34at'on'e sde'thereof. A'bore 40 is fo'rmed through the'hub of each head; and theusual grooves 42 W J t ditirhmaIYybppdSfi sidesbf th bore are revidedfdroperatively conne'cting are bammh' an associated spindle! I a I Externalthread's 5d are formed on th 'outer' surface arhub swam!thede'taiEofthethreadsforined an menus and the tubea'reili ustrated in:FIG 3. The threads conip'rise'a modified eight? pitch Acm' threadwherein the thread" flrtks define an angle a'" of 24%- The'thr eadflhizsis ar one sideofth'e formed on the tube are in-- contact with thethread flank s onesideofthe threads'fornied'on theassociated head;-while thethread-flanks* 16" at the opposite sideofi the threadsfot'in'edon; the'tttbe' are'spaced'from the flanks 50" on the opposite'sides of the threads'foirnied on the associated beintsubstantialiyfrustoconica! and flarint radiallfibutwardWIGfl a r n 6f fifrks? wandSWivithdn-e another from the inner surface of thetube towardtheend ofthetuhe and intersectingthe associatedabuttingsurfaceson the: tube Theabutting surface formed; on-eachkofthe' he'adsis also frustoconical andis compleatentary 'to' the fi'tistoconicai I resists separationofthe'abiitting'su'rfaces oft hetube' and asso'ci'atetiheads5 Each head"incmqes am 'ahutt i'ngsurface 0* which is of mental configuration'artd'tapers radially inwardly away m m gamed on m-o a 5 from theinne'r'endof the -h'ead; Abut'ti'n'g' surface iscomsurfaces on each headtaper radially inwardly awayfromthe" v inner end: of the associatedalwlfor'm am angie oia p-1 proximately with respect tothe yarn retainingface-on-the' associated head.

plernentary to abutting surface 20; and when in assein'bl e'drelationship as shovv'n'in FIG; 1, these surfaces snugly engage oneanothe tandfornt an anglefb" of 'approxirn'ately I3 5' ivithrespectto'th yarn-'retainiitgfacefl tof the associated head'.

Eaehhead also in; a surface ormedflthereon ad acenmhem rue-mumdefie'ctinrr orrieae l l isindicate'd by d'ot'70 abutting surfacethereof, saidadjacentlsurface oheacltv head beingannular andsubstantially arcuate in crowsectional con figuration. I

With the aforementioned torquemay-be 'ap plied to eachheadduringassemhlyi'the'reof, ma a: result tar- 1 whiclt representsacircularline'located on the'neutrai axis of thebearnnear location of maximumbendingL'The' location of neutral axisis a function of the'diniensionsof the: beam and doesnot changeiwith the'yarn load: appliedto the bearn:

tension of a line extending from the joint between the abutting surfacesto the center of deflection of the head.

Each head also includes a surface 74 joining with surface 60, surface 74being annular and of substantially arcuate cross-sectionalconfiguration.

when each head is assembled on the associated tube, lubrication isapplied to the threads on the tube and the head, and

torqueis applied to the head so as to preload the abutting surfaces ofthe joint in an axial direction extending substantially parallel withthe longitudinal axis of the tube.

Referring now to FIG. 4 of the drawings, a modification isillustratcdwherein the major portions of" the structure are similartothat previously described and corresponding parts have been given thesame reference numeralsprimed. The only difference in the structureshown in F1624 from that previously described is the provision ofadditional abutting surfaces 80 and 82 formed on the tube, and the headrespectively. Surfaces 80 and 82 are spaced axially from theaforedescribed abutting surfaces and 60', and abutting surfaces 80 and82 are each of frustoconical configuration and complementary to oneanother.

Referring now to FIG. 5, a further modification is illustrated. Thisembodiment of the invention incorporates abutting surfaces 90 and 92formed on the tube and the head respectively. Abutting surfaces 90 and92 extend s'ubstantially surfaces formed on said tube and said headextending at an angle of approximately 135 with respect to the yarnretaining face of the associated head. j g I V 5. Apparatus as definedin claim ziwherein said tube includes a surface formed adjacent each ofthe abutting surfaces thereon, each of said adjacent surfacesbeingsubstantially frustoconical and flaringiradially outwardly from theinner surface-of the tube toward the end of the tube and intersectingthe associated abutting surface. 4

61' Apparatus as defined in claim 1, wherein each of said heads'has' asurface formed thereon adjacent the abutting surface" thereof, saidadjacent surface being annular and of substantially arcuatecross-sectional confi uration.

7. Apparatus as defined'in claim 1, w 'er'e'inthe abutting surfaceformed at eachend of the tube is substantially frustoconical inconfiguration and tapers radially' inwardly from the outer surface ofthe tube toward "the associated'end of the tube, the abutting surfaceformed on each of said hea'dsbeing of frustoconical configuration andtapering radially inwardly away from the inner end of the associatedhead, said tube having a surface disposed adjacent each of said abuttingsurfaces, each of said adjacent surfaces on the tube being substantiallyfrustoconical and flaring radially outwardly from the inner surface ofthe tube toward the associated end of the tube, each of said headshaving a surface formed-thereon adjacent the abutting surface on thehead, each of said adjacent surfaces on the. head being annular and ofsubstantially arcuate cross-sectional configuration.

1. A textile beam comprising a tube, a pair of heads one of I which issecured to each end of said tube, each end of the tube and the adjacenthead having abutting. surfaces formed thereon to define a joint, saidtube andeach. of said heads hav-t ing cooperating threads formedthereonto secure; the heads in place, said threads having oppositeflanks disposed at oblique angles to the longitudinal axis of said tube,the abutting .surfaces between each of said heads and an associated endof-the tube being preloaded in an axial direction extending parallelwith the longitudinal axis of said tube, and the abutting surfaces atthe joint between each of said heads and the .associated end of the tubebeing parallel with or an extension of a line extending from the jointto the center of deflection of the associated head. 2. Apparatus asdefined in claim I, wherein the abutting sur- I faces fonned on saidtube and said heads are substantially .yarn retaining face disposed onone side thereof, the abutting .,8. .Apparatus as defined in claim 1,wherein said tube has a further pair of abutting surfaces formedthereon, each of said heads having a further abutting surface thereonengageable with one of said further abutting surfaces on the tube, saidfurther abutting surfaces formed on the tube and each of said headsbeing spaced axially from said first mentioned abutting surfaces andextending at an oblique angle to the longitudinal taxis "of the tube.

9. Apparatus as defined in claim 1, wherein said tube has a further pairof abutting surfaces formed thereon, each of said hea'ds havinga'further abutting surface thereon engageable with one of said furtherabutting surfaces on the tube, said further abutting surfaces formed onthe tube and each of said heads being spaced axially from said firstmentioned abutting surfaces and extending substantially perpendicularlyto the longitudinal axis of-the tube.

10. A textile beam comprising a tube, a pair of heads one of which issecured to each end of said tube, each end of the tube and the adjacenthead having abutting surfaces formed thereon to define a joint, saidtube and each of said heads having cooperating threads formed thereon tosecure the heads in place, saidthreads having opposite flanks disposedat oblique angles to the longitudinal axis of said tube, with the threadflanks at one side of the threads on the tube in contact with the threadflanks at one side of the threads on the heads, and with the threadflanks at the opposite side of the threads on the tubespaced from theflanks on the opposite sides of the ,threads on the heads, said threadsresisting separation of the abutted surfaces of the tube and theirassociated heads, the abutting surfaces between each of said headsand-an associated end of the tube being preloaded in an axial directionextending parallel with the. longitudinal axis of said tube.

1. A textile beam comprising a tube, a pair of heads one of which issecured to each end of said tube, each end of the tube and the adjacenthead having abutting surfaces formed thereon to define a joint, saidtube and each of said heads having cooperating threads formed thereon tosecure the heads in place, said threads having opposite flanks disposedat oblique angles to the longitudinal axis of said tube, the abuttingsurfaces between each of said heads and an associated end of the tubebeing preloaded in an axial direction extending parallel with thelongitudinal axis of said tube, and the abutting surfaces at the jointbetween each of said heads and the associated end of the tube beingparallel with or an extension of a line extending from the joInt to thecenter of deflection of the associated head.
 2. Apparatus as defined inclaim 1, wherein the abutting surfaces formed on said tube and saidheads are substantially frustoconical in configuration.
 3. Apparatus asdefined in claim 2, wherein the frustoconical surface at each end of thetube tapers radially inwardly from the outer surface of the tube towardthe associated end of the tube, the abutting surface formed on each headtapering inwardly away from the inner end of the associated head. 4.Apparatus as defined in claim 3, wherein each of said heads includes aradially outwardly extending flange having a yarn retaining facedisposed on one side thereof, the abutting surfaces formed on said tubeand said head extending at an angle of approximately 135* with respectto the yarn retaining face of the associated head.
 5. Apparatus asdefined in claim 2, wherein said tube includes a surface formed adjacenteach of the abutting surfaces thereon, each of said adjacent surfacesbeing substantially frustoconical and flaring radially outwardly fromthe inner surface of the tube toward the end of the tube andintersecting the associated abutting surface.
 6. Apparatus as defined inclaim 1, wherein each of said heads has a surface formed thereonadjacent the abutting surface thereof, said adjacent surface beingannular and of substantially arcuate cross-sectional configuration. 7.Apparatus as defined in claim 1, wherein the abutting surface formed ateach end of the tube is substantially frustoconical in configuration andtapers radially inwardly from the outer surface of the tube toward theassociated end of the tube, the abutting surface formed on each of saidheads being of frustoconical configuration and tapering radiallyinwardly away from the inner end of the associated head, said tubehaving a surface disposed adjacent each of said abutting surfaces, eachof said adjacent surfaces on the tube being substantially frustoconicaland flaring radially outwardly from the inner surface of the tube towardthe associated end of the tube, each of said heads having a surfaceformed thereon adjacent the abutting surface on the head, each of saidadjacent surfaces on the head being annular and of substantially arcuatecross-sectional configuration.
 8. Apparatus as defined in claim 1,wherein said tube has a further pair of abutting surfaces formedthereon, each of said heads having a further abutting surface thereonengageable with one of said further abutting surfaces on the tube, saidfurther abutting surfaces formed on the tube and each of said headsbeing spaced axially from said first mentioned abutting surfaces andextending at an oblique angle to the longitudinal axis of the tube. 9.Apparatus as defined in claim 1, wherein said tube has a further pair ofabutting surfaces formed thereon, each of said heads having a furtherabutting surface thereon engageable with one of said further abuttingsurfaces on the tube, said further abutting surfaces formed on the tubeand each of said heads being spaced axially from said first mentionedabutting surfaces and extending substantially perpendicularly to thelongitudinal axis of the tube.
 10. A textile beam comprising a tube, apair of heads one of which is secured to each end of said tube, each endof the tube and the adjacent head having abutting surfaces formedthereon to define a joint, said tube and each of said heads havingcooperating threads formed thereon to secure the heads in place, saidthreads having opposite flanks disposed at oblique angles to thelongitudinal axis of said tube, with the thread flanks at one side ofthe threads on the tube in contact with the thread flanks at one side ofthe threads on the heads, and with the thread flanks at the oppositeside of the threads on the tube spaced from the flanks on the oppositesides of the threads on the heads, said threads resisting separation ofthe abutted surfaces of the tube and their associated heads, theabutTing surfaces between each of said heads and an associated end ofthe tube being preloaded in an axial direction extending parallel withthe longitudinal axis of said tube.